Some breast cancer patients will also need surgery after chemotherapy in order to control the progression of their disease and improve their quality of life. For some breast cancer patients who take preoperative chemotherapy (neoadjuvant chemotherapy), surgery is usually required after chemotherapy. Pre-operative chemotherapy can generally reduce the size of localized lesions to facilitate surgical resection, while chemotherapy drugs can also kill potential metastatic lesions, thus reducing the risk of breast cancer recurrence and metastasis. Meanwhile, for some breast cancer patients who have lost the chance of surgery, chemotherapy can also reduce the size of lesions before surgery. Since chemotherapy drugs are cytotoxic, some patients are prone to toxic side effects after treatment, such as nausea and vomiting, hair loss, bone marrow suppression, etc. Patients need to adjust their mindset. Breast cancer patients are advised to choose appropriate treatment programs, such as radiation therapy, endocrine therapy, targeted therapy, etc., according to their own conditions and after evaluation by doctors, in order to reduce recurrence and prolong survival time. Breast cancer patients should also keep their body and mind happy, communicate with others more often, and seek psychotherapy when necessary.